This paper reports on the number of independent signals in body surface maps measured
using a variety of lead systems incorporating 32 up to 219 leads. The number of independent
signals is estimated using the minimum description length. It is found that the number
of independent signals in body surface maps is of the order of 10. For lead systems
incorporating many leads the number of independent signals is only marginally larger
than in lead systems incorporating fewer leads. A lead system incorporating 64 leads
will suffice for most applications.
Keywords
Body-Surface Mapping - Lead Systems - Signal Estimation